A disk drive unit such as a hard disk drive is provided in which the efficiency of manufacturing processes, cost reductions, and space savings are achieved. The hard disk drive has a stopper that is arranged between a set of coil holding arms of an actuator. The stopper regulates inward and outward turning of the actuator. A magnet is embedded in the stopper and holds a magnetic head of the actuator on a ramp.

 
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< Magnetoresistance effect element

< Magnetoresistance effect element having a nonmagnetic intermediate layer having a two-dimensional fluctuation of resistance

> Suspension assembly including a shape memory flexure element to adjust flexure or preload force

> Perpendicular magnetic recording head with nonmagnetic write gap greater than twice side shield gap distance
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